• Fully Forged 6.0 Iron Short Block 370/408CI 900HP

Forged 6.0 iron block 370/408CI stage 3
Blueprinted GM block Seasoned core
King main bearings
King rod bearings
Thompson Motorsports single piece racing cam bearings
K1 forged crankshaft with reluctor 3.622" or 4.000"
Manley H-Heavy or K1 4340 forged connecting rods with ARP 2000 rod bolts
You choice of CP Carrillo Diamond or Wiseco shelf piston with GFX file fit rings
Steel ring set
This short block is rated to 900HP (1100HP with ARP main stud upgrade)


 

PREMIUM SHORT BLOCK UPGRADE AVAILABLE INCLUDES THE FOLLOWING:
YOUR CHOICE OF TMS CUSTOM GROUND CAMSHAFT
BILLET ADJUSTABLE TIMING SET
MELLING SELECT HIGH PRESSURE OIL PUMP
CAM RETAINER PLATE
HARDWARE
INSTALLATION AND TIMING OF COMPONENTS
ACTIVATION OF YOUR TMS BASIC WARRANTY
*** Cam Chart Below***
 ****PRICE FOR PREMIUM UPGRADE IS SPLIT by the Upgrade drop down and camshaft drop down****
*** YOU MUST CHOOSE A CAMSHAFT FOR A PREMIUM SHORT UPGRADE, you may also choose a camshaft without the premium short upgrade***


12 Month Unlimited Mileage warranty with Purchase of Melling High Pressure Oil Pump 

***If, turbo, supercharged, or Stroker motor please add a High Pressure/High Volume oil pump for warranty"(if you do not add this pump for these application warranty will not be valid)***

***If Upgrading to a premium short block- no oil pump purchase needed for warranty (see details on premium short block below)***

For warranties and policies: https://www.thompsonmotorsports.net/warranties-and-policies.php 



*** CRATE AND ENGINE STAND REQUIRED FOR SHIPPING***

*A crate is not required for a customer pickup, only an engine stand*


*Gen III to Gen IV Short block conversion kit*

LS3 valley cover, gasket and bolt kit

LS3 front cover, gasket, bolt, sensor and harness kit

Cam and knock sensor extension harness

Timing set SELECT ONE (1X OR 4X)

Gen IV lifter buckets (Set of 4)

 

Call for any questions: 972-853-2450

We are located at: 

545 Justin Pl.

Nevada, TX

75173

 

All motors could require minor modifications for install (drill and tap holes or clearancing). These changes are minor and can be performed with simple common tools. Thompson Motorsports is not responsible for the work required nor does this warrant a reason for the return of the product, even in the case of a direct replacement. We are dedicated to customer service and are more than happy to help with the install in any way possible. Please feel free to call or email with any questions or concerns.

 

 All high performance motors will come with no VVTI or DOD. If the vehicle originally had either or both of these you will need to change to a LS2 front cover and LS2 valley cover to eliminate. You will also need to alert your tuner to the changes for PCM changes.




TURBOINT DUR @ .050"EXH DUR @ .050"INT LIFTEXH LIFTLSA
STAGE 12262320.5780.587115
STAGE 22302350.6250.625116
STAGE 32402460.630.63116.5
STAGE 42472530.630.63117
STAGE 5 Low lash solid roller2482540.630.63117
CENT BLOWERINT DUR @ .050"EXH DUR @ .050"INT LIFTEXH LIFTLSA
STAGE 1 up to 800HP2262320.5780.587115
STAGE 2 800-1200HP2362500.6250.625115
STAGE 3 1000-1400HP2402560.6250.625115
PDS BLOWERINT DUR @ .050"EXH DUR @ .050"INT LIFTEXH LIFTLSA
STAGE 1 FOR 1.92222350.5950.595120
STAGE 2 FOR PORTED 1.9 OR 2.32332490.630.63120
NA CATHEDRALINT DUR @ .050"EXH DUR @ .050"INT LIFTEXH LIFTLSA
STAGE 1 UP TO 125 NITROUS2162240.5530.553117
STAGE 2 UP TO 125 NITROUS2222250.5610.578112
STAGE 3 UP TO 150 NITROUS2262320.5780.587112
STAGE 4 UP TO 200 NITROUS2322380.6250.625112
NA SQUARE PORTINT DUR @ .050"EXH DUR @ .050"INT LIFTEXH LIFTLSA
STAGE 1 UP TO 125 NITROUS2162240.5530.553117
STAGE 2 UP TO 200 NITROUS DO NOT MILL HEADS ON STOCK SHORT BLOCK2332390.630.63112
STAGE 3 UP TO 200 NITROUS NOT FOR STOCK SHORT BLOCK2362420.6250.625113
STAGE 4 UP TO 250 NITROUS NOT FOR STOCK SHORT BLOCK2402560.6250.625113
STAGE 5 UP TO 350 NITROUS NOT FOR STOCK SHORT BLOCK2512660.630.63114

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Fully Forged 6.0 Iron Short Block 370/408CI 900HP

  • Product Code: P-C4
  • Availability: 977
  • $6,444.51


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Tags: short blocks, engines, TMS engines, iron block